Abstract.
The analysing power of the reaction \({\rm n} {\rm p} \rightarrow {\rm p} {\rm p} \pi^{-}\) for neutron energies between threshold and 570 MeV has been determined using a transversely polarised neutron beam at PSI. The reaction has been studied in a kinematically complete measurement using a time-of-flight spectrometer with large acceptance. Analysing powers have been determined as a function of the c.m. pion angle in different regions of the proton-proton invariant mass. They are compared to other data from the reactions \({\rm n} {\rm p} \rightarrow {\rm p} {\rm p} \pi^{-}\) and \({{\rm p} {\rm p} \rightarrow {\rm p} {\rm p} \pi^{0}}\). The np elastic scattering analysing power was determined as a by-product of the measurements.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 3 December 2001 / Revised version: 4 June 2002 / Published online: 26 July 2002
Rights and permissions
About this article
Cite this article
Daum, M., Finger, M., Finger, Jr, M. et al. Analysing power for the reaction \(\mathrm{np} \rightarrow \mathrm{pp} \pi^{-}\) and for np elastic scattering from 270 to 570 MeV. Eur. Phys. J. C 25, 55–65 (2002). https://doi.org/10.1007/s10052-002-1002-2
Issue Date:
DOI: https://doi.org/10.1007/s10052-002-1002-2